Computer-implemented method for recommending booths-to-visit

ABSTRACT

Disclosed is a computer-implemented method for recommending booths-to-visit to a user, comprising the following steps: accessing a user record, wherein the user record includes data indicative of booths which a user corresponding to the user record has visited in an exhibition; determining similarity level between records in a history database and the user record, the records in the history database including data indicative of the booths visited by previous visitors in the exhibition; selecting several of the records according to the determined similarity level; determining the booths in the all of the selected records not yet visited by the user; adding the determined booths to a candidate list; and presenting at least one of the booths in the candidate list to the user.

BACKGROUND

The present invention relates to computer-implemented methods forrecommending booths-to-visit in an exhibition to a user, and moreparticularly, to a computer-implemented method for recommending the nextbooth to a current user. The present invention further relates torecommending driving routes along roads.

DESCRIPTION OF THE PRIOR ART

Visitors in exhibitions and museums need assistance in finding intendedbooths, because exhibitions and museums are spacious enough toaccommodate numerous booths, but visitors can only spend limited timevisiting the booths in exhibitions and museums.

In view of this, the prior art put forth some solutions, for example, USPub. 2011/0153676 and US Pub. 2002/0168084. For further information,refer to “Explorer: The American Museum of Natural history”, a museumguide application (App) which can be downloaded from iTune Store.

SUMMARY

A computer-implemented method, according to one embodiment, includesaccessing a user record, wherein the user record includes dataindicative of booths which a user corresponding to the user record hasvisited in an exhibition; determining similarity level between recordsin a history database and the user record, the records in the historydatabase including data indicative of the booths visited by previousvisitors in the exhibition; selecting several of the records accordingto the determined similarity level; determining the booths in the all ofthe selected records not yet visited by the user; obtaining the user'scurrent location in the exhibition; determining a target booth, from thebooths not yet visited by the user, by referring to the current locationand a map database; and sending to the user a message indicative of thetarget booth; adding the determined booths to a candidate list; andpresenting at least one of the booths in the candidate list to the user.

A computer device, according to one embodiment, includes a memorycomprising a plurality of computer-executable instructions forperforming the foregoing method; and a processor for accessing thememory, executing the plurality of computer-executable instructions, andimplementing the method.

A computer program product for recommending booths-to-visit to a userincludes a computer readable storage medium having program instructionsembodied therewith, the program instructions executable by a computer tocause the computer to perform the foregoing method.

BRIEF DESCRIPTION OF DRAWINGS

In order that the advantages of the invention will be readilyunderstood, a more particular description of the invention brieflydescribed above will be rendered by reference to specific embodimentsthat are illustrated in the appended drawings. Understanding that thesedrawings depict only typical embodiments of the invention and are nottherefore to be considered to be limiting of its scope, the inventionwill be described and explained with additional specificity and detailthrough the use of the accompanying drawings.

FIG. 1 is a block diagram of a computer device according to anembodiment of the present invention;

FIG. 2 is a flow chart of a method according to an embodiment of thepresent invention.

DETAILED DESCRIPTION

Reference throughout this specification to “one embodiment,” “anembodiment,” or similar language means that a particular feature,structure, or characteristic described in connection with the embodimentis included in at least one embodiment of the present invention. Thus,appearances of the phrases “in one embodiment,” “in an embodiment,” andsimilar language throughout this specification may, but do notnecessarily, all refer to the same embodiment.

The present invention puts forth a way of recommending the visitingbooth in a personalized manner according to user's past visitingbehavior in an exhibition. Furthermore, the present invention ischaracterized in that, as a result of the ongoing development of user'svisiting behavior in an exhibition, dynamic recommendation iseffectuated by recommending a different subsequent visiting booth.

Compared with the present invention, the prior art mostly adopts staticrecommendation, that is, giving no consideration to user's pastbehavior, but providing a recommendation checklist according toinvariable (i.e., time-independent) user parameters, such as a user'sgender, age, and favorite theme. However, visiting behavior (whichinvolves staying at a booth and then moving to another booth) in anexhibition is essentially embodied in a series of persistent dynamicactivities and occurs in a very individual, impromptu manner. Inpractice, what a user needs most instantly is a recommendation of thenext booth rather than a checklist of recommended booths. According tothe present invention, a recommendation of the next booth at leastdepends on the booths previously visited by the user—a factor notconsidered by conventional static recommendation techniques. Inparticular, recommendation checklists of the prior art often causeinformation overload to users, not to mention that every user still hasto determine the next booth on his/her own.

In view of this, the present invention, in an embodiment thereof,entails comparing a user's latest visiting records in an exhibition andcomplete previous visiting records attributed to the other visitors andstored in a database, identifying a previous visitor similar to the userin visiting behavior, and treating the identified previous visitor as areference standard. Furthermore, in an embodiment of the presentinvention, which booth would be visited by the identified previousvisitor (the reference standard) after he/she visited the booth that theuser just visited is investigated, and the other criteria, such as theuser's current location and preference, are taken into consideration, inorder to recommend the next booth to the user.

Furthermore, in an embodiment of the present invention, users do notneed to strictly follow recommendation, as the users are allowed tospend most of their time looking around casually in an exhibition, butignoring recommendations given by a system, thereby maintaining theimportant individuality and extemporaneity of visiting pleasure. In anembodiment of the present invention, a recommendation of the next boothdepends largely on the last booth visited by the user (or the boothswhich the user has visited in an exhibition), and thus the mostappropriate next booth is recommended to the user according to theuser's latest visiting records whenever the user needs a recommendation.

Reference throughout this specification to features, advantages, orsimilar language does not imply that all of the features and advantagesthat may be realized with the present invention should be or are in anysingle embodiment of the invention. Rather, language referring to thefeatures and advantages is understood to mean that a specific feature,advantage, or characteristic described in connection with an embodimentis included in at least one embodiment of the present invention. Thus,discussion of the features and advantages, and similar language,throughout this specification may, but do not necessarily, refer to thesame embodiment.

Furthermore, the described features, advantages, and characteristics ofthe invention may be combined in any suitable manner in one or moreembodiments. One skilled in the relevant art will recognize that theinvention may be practiced without one or more of the specific featuresor advantages of a particular embodiment. In other instances, additionalfeatures and advantages may be recognized in certain embodiments thatmay not be present in all embodiments of the invention.

The following description, the appended claims, and the embodiments ofthe present invention further illustrate the features and advantages ofthe present invention.

As will be appreciated by one skilled in the art, the present inventionmay be embodied as a computer device, a method or a computer programproduct. Accordingly, the present invention may take the form of anentirely hardware embodiment, an entirely software embodiment (includingfirmware, resident software, micro-code, etc.) or an embodimentcombining software and hardware aspects that may all generally bereferred to herein as a “circuit,” “module” or “system.” Furthermore,the present invention may take the form of a computer program productembodied in any tangible medium of expression having computer-usableprogram code embodied in the medium.

Any combination of one or more computer usable or computer readablemedium(s) may be utilized. The computer-usable or computer-readablemedium may be, for example but not limited to, an electronic, magnetic,optical, electromagnetic, infrared, or semiconductor system, apparatus,device, or propagation medium. More specific examples (a non-exhaustivelist) of the computer-readable medium would include the following: anelectrical connection having one or more wires, a portable computerdiskette, a hard disk, a random access memory (RAM), a read-only memory(ROM), an erasable programmable read-only memory (EPROM or Flashmemory), an optical fiber, a portable compact disc read-only memory(CD-ROM), an optical storage device, a transmission media such as thosesupporting the Internet or an intranet, or a magnetic storage device.Note that the computer-usable or computer-readable medium could even bepaper or another suitable medium upon which the program is printed, asthe program can be electronically captured, via, for instance, opticalscanning of the paper or other medium, then compiled, interpreted, orotherwise processed in a suitable manner, if necessary, and then storedin a computer memory. In the context of this document, a computer-usableor computer-readable medium may be any medium that can contain, store,communicate, propagate, or transport the program for use by or inconnection with the instruction execution system, apparatus, or device.The computer-usable medium may include a propagated data signal with thecomputer-usable program code embodied therewith, either in baseband oras part of a carrier wave. The computer usable program code may betransmitted using any appropriate medium, including but not limited towireless, wireline, optical fiber cable, RF, etc.

Computer program code for carrying out operations of the presentinvention may be written in any combination of one or more programminglanguages, including an object oriented programming language such asJava, Smalltalk, C++ or the like and conventional procedural programminglanguages, such as the “C” programming language or similar programminglanguages. The program code may execute entirely on the user's computer,partly on the user's computer, as a stand-alone software package, partlyon the user's computer and partly on a remote computer or entirely onthe remote computer or server. In the latter scenario, the remotecomputer or server may be connected to the user's computer through anytype of network, including a local area network (LAN) or a wide areanetwork (WAN), or the connection may be made to an external computer(for example, through the Internet using an Internet Service Provider).

The present invention is described below with reference to flowchartillustrations and/or block diagrams of methods, apparatus (systems) andcomputer program products according to embodiments of the invention. Itwill be understood that each block of the flowchart illustrations and/orblock diagrams, and combinations of blocks in the flowchartillustrations and/or block diagrams, can be implemented by computerprogram instructions. These computer program instructions may beprovided to a processor of a general purpose computer, special purposecomputer, or other programmable data processing apparatus to produce amachine, such that the instructions, which execute via the processor ofthe computer or other programmable data processing apparatus, createmeans for implementing the functions/acts specified in the flowchartand/or block diagram block or blocks.

These computer program instructions may also be stored in acomputer-readable medium that can direct a computer or otherprogrammable data processing apparatus to function in a particularmanner, such that the instructions stored in the computer-readablemedium produce an article of manufacture including instruction meanswhich implement the function/act specified in the flowchart and/or blockdiagram block or blocks.

The computer program instructions may also be loaded onto a computer orother programmable data processing apparatus to cause a series ofoperational steps to be performed on the computer or other programmableapparatus to produce a computer implemented process such that theinstructions which execute on the computer or other programmableapparatus provide processes for implementing the functions/actsspecified in the flowchart and/or block diagram block or blocks.

Referring now to FIG. 1 through FIG. 2, computer devices, methods, andcomputer program products are illustrated as structural or functionalblock diagrams or process flowcharts according to various embodiments ofthe present invention. The flowchart and block diagrams in the Figuresillustrate the architecture, functionality, and operation of possibleimplementations of systems, methods and computer program productsaccording to various embodiments of the present invention. In thisregard, each block in the flowchart or block diagrams may represent amodule, segment, or portion of code, which comprises one or moreexecutable instructions for implementing the specified logicalfunction(s). It should also be noted that, in some alternativeimplementations, the functions noted in the block may occur out of theorder noted in the figures. For example, two blocks shown in successionmay, in fact, be executed substantially concurrently, or the blocks maysometimes be executed in the reverse order, depending upon thefunctionality involved. It will also be noted that each block of theblock diagrams and/or flowchart illustration, and combinations of blocksin the block diagrams and/or flowchart illustration, can be implementedby special purpose hardware-based systems that perform the specifiedfunctions or acts, or combinations of special purpose hardware andcomputer instructions.

<Computer Device>

FIG. 1 is a block diagram of a computer device 10 according to anembodiment of the present invention. The computer device 10 comprises adisplay unit 102, a processor 104, a memory 106, a communication module108, and a data input module 110.

The computer device 10 comes in the form of a conventional notebookcomputer or a portable information device. Preferably, the computerdevice 10 is a mobile phone; for further information pertaining to itsbasic elements, refer to Apple's iPhone products.

For example, the processor 104 is a CPU produced by Apple or ARM andmounted on a mobile device, whereas the memory 106 is a flash memory forstoring an operating system OS and computer-executable commands ofapplications AP, which are accessed and executed by the processor 104.For further information about the operating system OS, refer to Apple'siOS 7. The applications AP execute the steps depicted with FIG. 2 andgenerate or send messages to users. For related details, refer to thedescriptions below.

In an illustrative embodiment not shown, the computer device 10 comes inthe form of a high-level workstation or mainframe with robust processingcapability and storage capability, such as IBM's System X, Blade Center,and eServer. In this embodiment, the computer device 10 sends to auser's personal terminal (such as a mobile phone or a tablet) themessages generated from the applications AP with the communicationmodule 108 linked to a network (such as a wireless local area network(WLAN) or a 3G mobile phone network), thereby reducing greatly therequirements of the computation capability of the user's personalterminal.

In the embodiment depicted with FIG. 1, the memory 106 stores mapdatabase DB1 and history database DB2 and stores user record UR. Thedetails of map database DB1, history database DB2, and user record URare described later. In another embodiment, map database DB1, historydatabase DB2, and user record UR are also disposed or stored in a clouddevice (not shown) outside of the computer device 10, whereinapplications AP in the computer device 10 access required data through anetwork and thus reduce greatly the memory space required for the memory106. In another embodiment, map database DB1, history database DB2, anduser record UR are separately disposed in the computer device 10 and oneor more external cloud devices rather than disposed in the same device.

The map database DB1 stores digital map information of an exhibition,especially location data of a plurality of booths in the exhibition andbasic data of each booth, such as name and theme. For the operation ofmap database DB1, refer to the digital storey map provided in theaforesaid museum guide application (App) “Explorer: The American Museumof Natural History” or refer to the indoor maps of Google Map. Whenapplied to an embodiment of recommending driving routes, map databaseDB1 includes data pertaining to the locations of passing points (such asspecific sections) along a plurality of roads and basic data of eachpassing point, such as names and passing rules (say, tolls or speedlimits); for further details, refer to Google Map.

The history database DB2 stores a plurality of previous records PR1^(˜)PRn, wherein each record includes data indicative of the boothsvisited by a previous visitor in the exhibition from the beginning tothe end, preferably, including, but not limited to, the sequence of thebooths visited by the previous visitor and the time spent on visitingeach of the booths. Referring to Table 1 below, there are 4 previousrecords, wherein the English letters are the codes for the booths, andthe booth codes are arranged from the left to the right according to thevisiting sequence. As shown in Table 1, the numeral enclosed in thebrackets behind each booth code states the time (in 10 minutes) stayingat the booth. Table 1 illustrates a simple example, but, in practice,history database DB2 is likely to include thousands or tens of thousandsof records, with each record involving dozens of booths. Also, inanother embodiment, previous records contain booth codes but do notinclude sequence data.

TABLE 1 visitor visiting booth No. 1 A(2); B(1); C(2); D(1); E(3) No. 2A(1); F(2) No. 3 B(1); F(2) No. 4 A(2); B(1); C(1); D(1); E(3); F(2)

The amount of time a visitor spends at each booth correlates indirectlywith the degree of interest the visitor has in the booth. However, topreclude errors, it is preferable to adjust the amount of time (statedin previous records) a visitor spends at each booth according to apredetermined rule. For instance, considering that there are numerousvisitors in an exhibition at weekends and on holidays and thus thevisitors move within a booth slowly, it is practicable to adjust theactual stay duration proportionally and thereby reveal the extent ofvisitors' interest in the booths accurately, but the present inventionis not limited thereto.

The way of accessing previous visitor records is disclosed in the priorart; for further details, refer to Indoor Positioning System (IPS)technology, such as infrared positioning technology, Global PositioningSystem (GPS), Radio Frequency (RF) positioning technology, and RadioFrequency Identification (RFID) positioning technology, disclosed in USPub. 2011/0153676, but the present invention is not limited thereto.When applied to an embodiment of recommending driving routes, thelocating and accessing of previous driving records can be achieved bysignals sent from a vehicular mobile phone.

User record UR is provided in the same form as previous visitor recordsPR1 ^(˜)PRn are (as shown in Table 1). Since user record UR is intendedfor a user in need of instant recommendations, user record UR isrestricted to data pertaining to booths visited by the user in anexhibition up to the present moment, though the contents of user recordUR increase with the time the user stays in the exhibition. For detailsof the way of accessing user record UR, refer to the above descriptionof previous visitor records.

FIG. 2 is a flow chart of a computer-implemented method for recommendingbooths-to-visit to a user with the computer device 10 shown in FIG. 1according to an illustrative embodiment of the present invention.

Step 200: the computer device 10 accesses map database DB1 and historydatabase DB2 corresponding to the map database DB1 according to apredefined setting provided by the user. In an embodiment, regarding mapdatabase DB1, the user specifies a specific exhibition or even aspecific area (such as a specific storey in a museum) of a largeexhibition. History database DB2 stores the aforesaid previous visitorrecords PR1 ^(˜)PRn. The user specifies a period of time (say, Nov. 1,2013 through Nov. 30, 2013), and the computer device 10 only accessesrecords PR1 ^(˜)PRn which exist during the period of time.

Step 202: the computer device 10 accesses user record UR. User record URis updated instantly according to any changes in the activitiesperformed by the user in the exhibition, such that in step 202 thecomputer device 10 must access the latest user record UR.

Step 204: the computer device 10 compares previous records PR1 ^(˜)PRnin history database DB2 and user record UR to therefore calculate thesimilarity between user record UR and each previous record PR1 ^(˜)PRnand further select previous records of higher similarity for use in thesubsequent step. Similarity algorithms for use in calculating thesimilarity between two pieces of data or between several rows of dataare not limited by the present invention but are well known amongpersons skilled in the art; for further details, refer to the similarityalgorithms disclosed in US Pub. 2011/0153676; hence, the similarityalgorithms are not described herein for the sake of brevity. Tocalculate similarity, it is feasible to assign different weights to eachprevious record, for example, a large weight is assigned to a recentrecord, or a larger weight is assigned to previous records which takerecommendations from the computer device 10 than previous records whichignore recommendations from the computer device 10.

In an illustrative embodiment, user record is depicted with Table 2.

TABLE 2 user visiting booth A(2); B(1);

In this simplified example, a comparison of user record of Table 2 andprevious records of Table 1 reveals that records of visitor No. 1 andvisitor No. 4 are similar to user record, as all including “A(2); B(1)”.Hence, records of visitor No. 2 and visitor No. 3, which are not similarto user record, are ruled out, and then the process flow of the methodgoes to step 206.

Step 206: the shared ones (i.e., the intersection) of the records ofvisitor No. 1 and visitor No. 4 are identified to obtain “A(2); B(1);D(1); E(3)”. Furthermore, compared with the user record (i.e., “A(2);B(1)”) illustrated with Table 2, it reveals that the user has notvisited booth D and booth E, and thus booth D and booth E are includedin a recommended candidate list. Regarding the above simplified example,in another embodiment, step 204 entails selecting three or more visitorrecords according to a similarity criterion, such that step 206 entailsidentifying the largest possible number of shared ones of the visitorrecords selected in step 204, identifying booths which the user has notvisited from the largest possible number of shared ones of the selectedvisitor records, and including the identified booths in a candidatelist. Then, the process flow of the method goes to step 208.

Step 208: a booth is selected from the candidate list (i.e., booth D andbooth E in this embodiment) according to another criterion, and theselected booth is recommended to the user. In an embodiment,considerations are given to booth visiting sequence to therefore findthat booth D precedes booth E whether in the records of visitor No. 1 orin the records of visitor No. 4, and thus booth D is regarded as therecommended booth.

In another embodiment, no considerations are given to booth visitingsequence, and the nearer one of booth D and booth E to the user'scurrent location is regarded as the recommended booth.

In another embodiment, theme data (stored in map database DB1) of boothD and booth E is compared with a preference criterion provided by theuser, such that booth D and booth E will be regarded as recommendedbooths if they meet the user's preference criterion.

Compared with the above embodiment in which the user takes theinitiative in providing a preference criterion, another embodiment ischaracterized in that: the user need not take the initiative inproviding a preference criterion, but the system infers the user'shabit, compares the user's habit with theme data (stored in map databaseDB1) of booth D and booth E, and regards booth D and booth E asrecommended booths whenever booth D and booth E comply with the user'shabit. For instance, the computer device 10 accesses information(including posts, photos, attendance card reader locations, and “liked”subjects) published by the user on a social networking website, such asFacebook, so as to infer the user's habit with a computer algorithm. Forfurther details of the examples of the computer algorithm, refer toTF-IDF (Term Frequency-Inverse Document Frequency) technology, and referto a way of displaying appropriate advertisements by identifying users'habits according to the contents of messages published by the users onFacebook, for example.

In an embodiment of recommending driving routes, the computer device 10receives positioning signals from the user's vehicular mobile phone,calculates the average speed at which the user's vehicle is moving, andthus infers the user's favorite driving speed, so as to giverecommendations to the user either in tolled highways or local roadswithout tolls.

In yet another embodiment, available visiting time is specified by theuser (when, for example, the user enters his or her own availablevisiting time-related data into the computer device 10.) For instance,if the user has 20 minutes left only, booth D will be regarded as therecommended booth, because the records of visitor No. 1 and visitor No.4 indicate that the visitors stay at booth D for 10 minutes and booth Efor 30 minutes (i.e., longer than 20 minutes.)

In an additional embodiment, given the aforesaid technique of accessinguser record UR, the computer device 10 can be informed of the locationsof all the visitors present in an exhibition and thus the quantity ofvisitors present at each booth, such that the less-visited one of boothD and booth E is regarded as the recommended booth to therefore preventcongestion. In the situation where booths differ in area or space use,it is practicable to calculate the visitor density of each booth (i.e.,number of visitors per unit area of a booth) and regard the less-crowdedone of booth D and booth E as the recommended booth. In Table 1 andTable 2, the time the visitors and user spend at each booth iscalculated by adjusting or normalizing their actual stay durationaccording to the then visitor density of each booth.

The aforesaid techniques for use in step 208 can be combined or assignedwith different weights, such that a booth is selected from the candidatechecklist of step 206 and recommended to the user.

Step 210: the recommended booth selected in step 208 is presented to theuser by a text message or a multimedia message. Preferably, by makingreference to the location of the recommended booth in map database DB1and the user's current location, it is feasible to generate navigationdata whereby the user arrives at the recommended booth quickly to visitit. In another embodiment, a message is sent to the customer servicestaff of the recommended booth to remind the staff to prepare for thearrival of the user.

As mentioned before, a larger weight is assigned to previous records(routes) which take recommendations from the computer device 10 thanprevious records (routes) which ignore recommendations from the computerdevice 10. Hence, the result of step 208 is an example where booth D isregarded as the recommended booth, if the user does take therecommendation and visits booth D (it is practicable to carry out theaforesaid positioning technique to determine whether the user takes therecommendation), the method depicted with FIG. 2 and carried outsubsequently (for example, to the other user) will entail assigning alarger weight to the route (because booth D was previously recommendedand adopted), such that the route will be recommended first; hence, whenapplied to another user, step 208 entails treating booth D as therecommended booth.

Optionally, step 206 is replaced with step 216. Step 216 involvesidentifying all the records of visitor No. 1 and visitor No. 4 (i.e.,the union of the records of visitor No. 1 and visitor No. 4), so as toobtain “A(2); B(1); C(2); C(1); D(1); E(3); F(2)”. Furthermore, comparedwith the user record illustrated with Table 2, it indicates that theuser has not visited booth D, booth E, and booth F, and thus it ispracticable to include booth D, booth E, and booth F in a recommendedcandidate list. In step 208, in addition to the aforesaid techniques,considerations are given to the number of instances in which booth D,booth E, and booth F are mentioned in previous records (inclusive of therecords of visitor No. 1 and visitor No. 4) of Table 1, wherein booth Fis mentioned thrice (in reference to visitor No. 2, visitor No. 3, andvisitor No. 4, respectively) and thus ranks first, whereas booth D andbooth E are each mentioned twice and thus rank second. If no otherfactors are taken into consideration, booth F can be regarded as therecommended booth. Preferably, all the other techniques are combined andassigned different weights, such that a booth is selected from thecandidate checklist of step 216 and recommended. The aforesaid technique(described in step 208), which entails calculating the number ofinstances in which each booth on the candidate list is mentioned in theprevious records of Table 1, is also applicable to the candidate listcreated in step 206. In another embodiment, it is unnecessary toidentify the shared ones of the records of visitor No. 1 and visitor No.4 or identify all the records of visitor No. 1 and visitor No. 4;instead, it is good enough to calculate the number of instances in whicheach booth mentioned in the records of visitor No. 1 and visitor No. 4is also mentioned in the previous records of Table 1.

Although the present invention is illustrated with visits to anexhibition, persons skilled in the art can make reference to the abovedescriptions and thus are able to apply the present invention inrecommending routes to drivers, for example, replacing the booths in theexhibition with passing points (say, specific sections) along a road.

The foregoing preferred embodiments are provided to illustrate anddisclose the technical features of the present invention, and are notintended to be restrictive of the scope of the present invention. Hence,all equivalent variations or modifications made to the foregoingembodiments without departing from the spirit embodied in the disclosureof the present invention should fall within the scope of the presentinvention as set forth in the appended claims.

What is claimed is:
 1. A computer-implemented method, comprising:accessing a user record, wherein the user record includes dataindicative of booths which a user corresponding to the user record hasvisited in an exhibition; determining similarity level between recordsin a history database and the user record, the records in the historydatabase including data indicative of the booths visited by previousvisitors in the exhibition; selecting several of the records accordingto the determined similarity level; determining the booths in all of theselected records not yet visited by the user; adding the determinedbooths to a candidate list; and presenting at least one of the booths inthe candidate list to the user.
 2. The method of claim 1, comprising:obtaining the user's current location in the exhibition; and determininga target booth from the candidate list by referring to the currentlocation and a map database, wherein the target booth is one of the atleast one of the booths in the candidate list presented to the user. 3.The method of claim 2, wherein determining the target booth comprises anoperation selected from the group consisting of: (1) obtaining a numberof current visitors for each of to the booths not visited by the userand determining the target booth according to the number of currentvisitors, and (2) obtaining a distribution density of visitors for eachof the booths not visited by the user and determining the target boothaccording to the distribution density of visitors.
 4. The method ofclaim 2, wherein the map database includes theme data of each of thebooths, wherein determining the target booth comprises obtaining apreference criterion entered by the user and/or a user habit inferredfrom a computer algorithm, and screening theme data of the booths notvisited by the user according to the preference criterion and/or theuser habit, so as to determine the target booth.
 5. The method of claim2, wherein determining the target booth comprises for each of the boothsnot visited by the user, calculating how many instances in which thebooth is mentioned in the records in the history database, sorting thebooths not visited by the user according to the calculation, anddetermining the target booth.
 6. The method of claim 1, wherein only aplurality of records in the history database complying with a specifiedperiod of time are accessed, wherein determining the similarity levelcomprises determining similarity between the user record and each recordcomplying with the period of time, selecting from the history databaseseveral of the records complying with the period of time according tothe determined similarity, and regarding said records as the selectedrecords.
 7. The method of claim 1, wherein records in the historydatabase further include data indicative of a sequence of booths visitedby the previous visitors; wherein the user record further includes dataindicative of a sequence of booths visited by the user; and wherein dataincluded in the user record to indicate a sequence of booths visited bythe user and data included in the selected record from the historydatabase to indicate a sequence of booths visited by the previousvisitor are identical when referring to the same booths.
 8. The methodof claim 1, wherein each record in the history database further includesdata indicative of time spent by the previous visitor at each visitedbooth; wherein the user record further includes data indicative of timespent by the user at each visited booth; and wherein data included inthe user record to indicate the time spent by the user at each visitedbooth and data included in the selected record to indicate the timespent by the previous visitor at each visited booth are identical whenreferring to the same booth.
 9. The method of claim 8, wherein the timespent by the previous visitor at each visited booth is calculated byadjusting and/or normalizing the time actually spent by the previousvisitor at each visited booth according to a visitor density of eachvisited booth when visited by the previous visitor, wherein the timespent by the user at each visited booth is calculated by adjusting ornormalizing the time actually spent by the user at each visited boothaccording to the visitor density of each visited booth when visited bythe user.
 10. The method of claim 8, comprising determining a targetbooth, wherein at least one of the booths in the candidate listpresented to the user is the target booth, wherein determining thetarget booth comprises accessing available visiting time specified bythe user and determining the target booth according to the availablevisiting time.
 11. The method of claim 10, wherein a number of boothswhich the user expects to visit is provided by the user, and the numberis obtained, such that the target booth is determined according to thenumber.
 12. A computer device, comprising: a memory comprising aplurality of computer-executable instructions for performing the methodof claim 1; and a processor for accessing the memory, executing theplurality of computer-executable instructions, and implementing themethod.
 13. A computer program product for recommending booths-to-visitto a user, the computer program product comprising a non-transitorycomputer readable storage medium having program instructions embodiedtherewith, the program instructions executable by a computer to causethe computer to: access, by the computer, a user record, wherein theuser record includes data indicative of booths which a usercorresponding to the user record has visited in an exhibition;determine, by the computer, similarity level between records in ahistory database and the user record, the records in the historydatabase including data indicative of the booths visited by previousvisitors in the exhibition; select, by the computer, several of therecords according to the determined similarity level; determine, by thecomputer, the booths in the selected records not yet visited by theuser; add, by the computer, the determined booths to a candidate list;and present, by the computer, at least one of the booths in thecandidate list to the user.
 14. The computer program product of claim13, wherein only a plurality of records in the history databasecomplying with a specified period of time are accessed, whereindetermining the similarity level comprises determining similaritybetween the user record and each record complying with the period oftime, selecting from the history database one of the records complyingwith the period of time according to the determined similarity, andregarding said record as the selected record.
 15. The computer programproduct of claim 13, comprising program instructions executable by thecomputer to cause the computer to: obtain the user's current location inthe exhibition; and determine a target booth from the candidate list byreferring to the current location and a map database, wherein the targetbooth is one of the at least one of the booths in the candidate listpresented to the user.
 16. The computer program product of claim 15,wherein obtaining the user's current location comprises an operationselected from the group consisting of: (1) obtaining a number of currentvisitors for each of to the booths not visited by the user anddetermining the target booth according to the number of currentvisitors, and (2) a distribution density of visitors for each of thebooths not visited by the user and determining the target boothaccording to the distribution density of visitors.
 17. The computerprogram product of claim 15, wherein the map database further recordstheme data of each of the booths, wherein obtaining the user's currentlocation comprises obtaining a preference criterion entered by the useror a user habit inferred from a computer algorithm, and screening themedata of the booths not visited by the user according to one of thepreference criterion and the user habit, so as to determine the targetbooth.
 18. The computer program product of claim 13, wherein records inthe history database further include data indicative of a sequence ofbooths visited by the previous visitors; wherein the user record furtherincludes data indicative of a sequence of booths visited by the user;and wherein data included in the user record to indicate a sequence ofbooths visited by the user and data included in the selected record fromthe history database to indicate a sequence of booths visited by theprevious visitor are identical when referring to the same booths. 19.The computer program product of claim 13, wherein each record in thehistory database further includes data indicative of time spent by theprevious visitor at each visited booth; wherein the user record furtherincludes data indicative of time spent by the user at each visitedbooth; and wherein data included in the user record to indicate the timespent by the user at each visited booth and data included in theselected record to indicate the time spent by the previous visitor ateach visited booth are identical when referring to the same booth. 20.The computer program product of claim 19, wherein the time spent by theprevious visitor at each visited booth is calculated by adjusting and/ornormalizing the time actually spent by the previous visitor at eachvisited booth according to a visitor density of each visited booth whenvisited by the previous visitor, wherein the time spent by the user ateach visited booth is calculated by adjusting or normalizing the timeactually spent by the user at each visited booth according to thevisitor density of each visited booth when visited by the user.